Lucy, is our 15week old Buff Orpington pullet. She has been the smallest of our girls since the day we got her at a couple days old. About three days ago I noticed she was looking thinner than usual. I watched her for the past couple days, and like I said she is acting normal. Today when I picked her up her breast bone felt very prominent, and she feels lighter. I checked her poo, and it is a little on the softer side, but not runny. She eats, drinks, runs around, and even bosses some of the other girls out of the way for a treat. There where no signs of mites or anything like that. No sneezing, or coughing either. Just really a change in weight. She Lives in a 5x7 coop with 6 other gals, and has a huge enclosed yard to roam. What can I do to put weight on her before she starts to lay? She feels so tiny compared to the other Buff's I have. I want to nip a problem in the butt, before it is something more serious.